.p_login {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  flex-flow: column nowrap;
  justify-content: center;
  align-items: center;
  color: #fff;
}

.moon {
  position: absolute;
  top: 90px;
  left: 90px;
  width: 200px;
  height: 200px;
  transform: rotate(-30deg);
  border-top: 5px solid #cfc191;
  border-radius: 50%;
  filter: drop-shadow(0 0 2px #82805b)
    drop-shadow(0 0 5px #82805b)
    drop-shadow(0 0 10px #82805b)
    drop-shadow(0 0 20px #82805b);
}
.red_brick {
  width: 400px;
  height: 400px;
  background-color: silver;
  background-image: linear-gradient(335deg, #b00 23px, transparent 23px),
  linear-gradient(155deg, #d00 23px, transparent 23px),
  linear-gradient(335deg, #b00 23px, transparent 23px),
  linear-gradient(155deg, #d00 23px, transparent 23px);
  background-size: 58px 58px; 
  background-position: 0px 2px, 4px 35px, 29px 31px, 34px 6px;
}
.red_heart {
  width: 400px;
  height: 400px;
  background: 
    radial-gradient(circle closest-side at 60% 43%, #b03 26%, rgba(187,0,51,0) 27%),
    radial-gradient(circle closest-side at 40% 43%, #b03 26%, rgba(187,0,51,0) 27%),
    radial-gradient(circle closest-side at 40% 22%, #d35 45%, rgba(221,51,85,0) 46%),
    radial-gradient(circle closest-side at 60% 22%, #d35 45%, rgba(221,51,85,0) 46%),
    radial-gradient(circle closest-side at 50% 35%, #d35 30%, rgba(221,51,85,0) 31%),

    radial-gradient(circle closest-side at 60% 43%, #b03 26%, rgba(187,0,51,0) 27%) 50px 50px,
    radial-gradient(circle closest-side at 40% 43%, #b03 26%, rgba(187,0,51,0) 27%) 50px 50px,
    radial-gradient(circle closest-side at 40% 22%, #d35 45%, rgba(221,51,85,0) 46%) 50px 50px,
    radial-gradient(circle closest-side at 60% 22%, #d35 45%, rgba(221,51,85,0) 46%) 50px 50px,
    radial-gradient(circle closest-side at 50% 35%, #d35 30%, rgba(221,51,85,0) 31%) 50px 50px;
  background-color:#b03;
  background-size:100px 100px;
}
.black_sky {
  background-color: #5b6a82;
  background-image:
    radial-gradient(white, rgba(255,255,255,.2) 2px, transparent 40px),
    radial-gradient(white, rgba(255,255,255,.15) 1px, transparent 30px),
    radial-gradient(white, rgba(255,255,255,.1) 2px, transparent 40px),
    radial-gradient(rgba(255,255,255,.4), rgba(255,255,255,.1) 2px, transparent 30px);
  background-size: 550px 550px, 350px 350px, 250px 250px, 150px 150px; 
  background-position: 0 0, 40px 60px, 130px 270px, 70px 100px;
}


.login_box {
  display: flex;
  flex-flow: column nowrap;
  justify-content: flex-start;
  align-items: center;
  width: 340px;
  background: #bfbfbf;
  color: #363636;
  border-radius: 10px;
  box-sizing: border-box;
  padding: 20px;
}
.login_title {
  margin: 10px 0;
  font-size: 24px;
  font-weight: bold;
}
.login_form_item {
  margin: 10px 0 0;
}
.login_form_item_title {
  width: 50px;
  text-align: left;
  font-size: 16px;
}
.login_form_item_input {
  font-size: 14px;
  width: 140px;
  outline: none;
  border: none;
  border-bottom: 1px solid #ddd;
  box-sizing: border-box;
  padding-left: 5px;
  line-height: 24px;
}
.login_btn {
  width: 190px;
  background: #8a9296;
  text-align: center;
  color: #fff;
  border-radius: 10px;
  line-height: 40px;
  font-size: 18px;
  font-weight: bold;
  margin-top: 10px;
  cursor: pointer;
}